Thanks for writing in.
From your problems, it looks like you may be having problem with sensorineural deafness
For this the nerve
supply to your ear must be studied, as well a s any cause in the brain that is causing a secondary problem. The dizziness
also needs to be evaluated accordingly.
Coming to your travelling plans, please ask your doctor for any antivertigo medication that can be taken around 30 minutes before commencement of journey. Always ask crew to provide you with something like a plastic bag, in case you feel like vomiting
and are not allowed to visit washroom mid flight.
Hope this helps.